5/16 x 32L Black Wire-o (3:1)

Wire Binding gives your documents a well polished look while keeping pages in perfect register. These spines are black in colour, 5/16" in diameter and have 32 loops, allowing them to bind a book 11" long. They can hold up to 40 sheets of 20lb bond paper. This tamper-proof binding system also lets your books open a full 360 degrees and will allowing your document to lay flat when opened. 3:1 pitch refers to 3 holes per 1 inch and will be based on your punching machine die. Please contact us for cut to length Wire-O.